I don't think Emo's has anything to do with SXSW. That's at Zilker Park, Emo's is a little... Club? Bar? A thing like that. Venue, I guess. Usually lower-name people (like mc chris) play there, but occasionally they get a few better known banRAB like Avenged Sevenfold. Pretty good place for concerts. Cheap, too.
i dont know, i saw him here on campus about a year ago and it was probably one of the worst shows ever. all it was was him and his powerbook beats - not much interaction....